Heating device



Oct. 4, 1932. B. QSKLOVSKY 1,880,291

HEATING .DEVICE Filed Feb. 11. 1931 2 Sheets-Sheet 1 FIG-.I; FIG. :3

INVENTOR Bsmnmm Smovsm ATTORNEY Oct. 4, 1932. SKLQVSKY 1,880,291

HEATING DEVICE Filed Feb. 11. 1951 2 Sheets-Sheet 2 INVENTOR BENJHMIN SKLOVSKY ATTORNEY Patented Oct. 4, 1932 BENJAMIN sKLovsKY, or CHICAGO, ILLINOIS HEATING nnvror. I

Application filed February 11, 1931. Serial No. 515,056.

'This invention relates to apparatus and methods for heating fluids. It is particularly applicable to heating gases or vapors and is well suited to the specific application of absorbingwaste heat by a cooler stream of fluid. In order to simplify the description of this invention, the specific application of a recuperator or heat interchanger used in connection with a furnace will be employed.

Itshould distinctly be understood, however, that my invention is applicable to many other cases of heating fluidsor mixtures of fluids.

Some of the objects of my invention are to obtain a large thermal transfer, to obtain a high degree of efficiency in reclaiming waste heat, to make it possible to heat two different fluids in the same device simultaneously, but separated one from the other,as for example fuel gas and air. My invention also provides means for obtaining an eddying' effect of the fluids transmitting the heat thereby reclaiming a greater portion of heat and increasing the efliciency of my device,

My invention also permits of making va cheap effective heat interchanger which can be assembled in multiple or parallel passes asdesired, with a minimum of time and expense and yet obtain a maximum of efliciency. My device also permits of unit construction,

so that additions, replacements and initial construction are simple and inexpensive.

Other objects of myinvention will be apparent in the description and claims appended hereto.

Referring to the drawings Figures 1 and 2 show partly in section a plan and elevation of one form of my device,

While Figure 3 shows an end view of the same device. v. i 7

Figures 4 and 5 show an end and side elevation of a formof connection for introducing and removing fluids to a'form of my device similar to that shown in Figures 1 and 2. 1

F igures6, 7 and 8 show respectively an end elevation, a side elevation and a plan of a return bendfor connecting two units. of my device together.

Figures 9, 10 and 11 show respectively a plan, a side elevation andv an end elevation of another form of connector for my device.

. Figures 12 and 13 show end caps for my device.

,Figure 14; shows two units in accordance with my invention connected up with the end cap of Figure 12, the series connection. of Figures 6, 7 and 8 and the inlet connection of Figures .4 and 5. f

Figure 15 shows a diflerent manner of connecti ng up two units of my invention and is partlcularly applicable in the case in which two separate fluids are being heated.

Figure 16 shows diagrammatically a form of my invention applied to preheating com bustion air in the furnace utilizing waste gas for this purpose.

Referring now to the'drawings':

1 indicates a housing or frame provided at each end with flanges 2 and 3 respectively. '70 A central partition l isprovideddividing housing 1 into two independent portions which are notconnected with each other within the housing. A series of ports or openings through housing 1 are indicated by 5, 6 and 7. These ports are distinguished by having a large inlet portion 8, a constricted central portion 9. and an enlarged outlet portion 10. This contour which may be varied in many obvious degrees, provides an eddying effect for the fluids travelingthrough the duct thus obtaining better contact between the fluid and the duct walls, which in turn insures a more complete heat transfer. I may also provide aseries of lugs or supports indicated by 11, 12, 13 and 14: which serve as spacers in the case of assembling twoor more of my units together. These lugs also assist in obtaining a further heat transfer substantially identical.

duct 18 within which is a partition 19. The

partition 19 serves to maintain separation between the two independent passageways of the housing. If I desire to complete the travel of gases being heated within two units of the type shown, I apply a'cap member 20 which is provided with a flange 21 at the endv of one unit, so that the gases leave one of the se'paratepassageways, circle through the cap 20 and return by the other passageway.

In order to introduce two separate gases into my heat interchanger most conveniently, I employ the double inlet 22 which is provided with flanges 23 and 2e. An assembly making use ofcap 20 return bend 15, double inlet 22 and two units is shown in detail in Figure 14. In case it is desired to utilize two units of my device for heating two separate fluids, I may employ an assembly as shown in Figure 15 which is similar to that shown in Figure 14, with the exception that two double inlets 22 are employed, in which case 'I designate the upper one as 22A and the. lower one as 22-'B, although they may in fact be If desired, I may utilize a three-way inlet-member 26 in place of member 22. This may consist likewise'of a single flange 27 and two smaller flanges 28 and 29 and differs principally from the double connection shown in Figures 4 and 5 in that it permits the simultaneous introduction of two different fluids at the same time.

Referring. to the general assembly illustrating my equipment in use, 30 represents a furnace provided with a door member 31, a burner 32. which is supplied withfuel by pipe 33 and air by pipe'34. The airand fuel are introduced into combustion chamber 35, where'combustion takes place. The products of combustion travel through port 36 as indicated by the arrows passing through the ports and around the recuperator sections 1, return bend 15, cap member 20, etc. Products of combustion leave by means of stack 37 which may be controlled ifdesired by damper 38. Air being heated is introduced through duct 39 passing into lower recuperator section through double. flangemember 22. The air being heated follows the path of the arrows through the ducts and recuperator.

It will be apparent that my device may be assembled in any desired number of units utilizing the equipment shown or obvious v modifications thereon. Itwillfalso be apparent that my device may be modified in many details without departing from the spirit of my invention.

While I prefer to use metal in constructing my device, I do not wish to restrict my invention to this feature only. I find it an advantage to use alloy for the section of the heat interchanger, which is most closely adj acent to the furnace and cast iron or less expensive materials in the other portions. In many cases the operating temperatures are so low that alloy is entirely unnecessary or I may even construct my device from sheet metals, using welded, bolted or seamed joints.

Having now fully described my invention, what I; claim as new and wish to secure by Letters Patent in the United States, is as fol lowsz' 1. A heat interchanger consisting of a unitary housing, an integral inlet and outlet near the'ends' of said housing, an integral partition wall extending longitudinally of said housing and a series of transverse passages through said housing, and said integral partition wall, saidpassages having a cross sec tion varying in area at different points.

2. A heatfinterchanger system comprising an enclosure, a unitary housing within said enclosure, a longitudinal partition, integral with said housing, dividing said housing into two independent unconnected portions and a. series of ducts through said partition and housing. i

3. In a heat interchanger, a unitary housing, a partition wall within said housing and integral therewith, venturi shaped passages through said housing, and said partition, but separated from the interior of said housing, the walls of said passages and said partition wall being formed integral one with the other.

4c- In a heat interchanger, a housing consisting of-a multiple of units, fittings connecting the interior of adjacent units of said group, a plain longitudinal integral continuous partition dividing each unit into two separate portions, and a series of transverse ducts through said partition and said housing.

5; heat, interchanger consisting'of a multiple" of housings, spacing members between said housings, a connecting member uniting adjacent housings, an integral "partition wall dividing said housings and said connecting member, and a series of transverse ducts through said housings and through said partition wall.

6. A heat interchanger consisting of a multiple of housings, spacing members between said housings, a connecting member uniting adjacent housings, a partition wall dividing said housings and said connecting member into independent passages, and a1series of passages through, said housings and through said partition wall permitting the V flow of the heating fluids.

.7. A heat interchange-r consistingofa unitary houslng, an integral inlet, an outlet near the ends of said housing, an integral partition Wall extending longitudinally of said housing, thereby forming two contacting passages through said housing, a series of transverse passages through said housing and said integral partition Wall, said passages having a cross section varying in area at different points and a second housing of heat retarding Walls surrounding said unitary housing and arranged to confine the heating medium.

BENJAMIN SKLOVSKY. 

